#include "stdafx.h"

#include "../xrLC_Light/xrMU_Model.h"
#include "OGF_Face.h"
#include "build.h"

#define	TRY(a) try { a; } catch (...) { clMsg("* E: %s", #a); }

void MModel_face2OGF_Vertices( const _face &FF, OGF_Vertex	V[3], const xrMU_Model &model )
{
	for (u32 k=0; k<3; k++)
	{
		_vertex*	_V		= FF.v[k];	
		u32 id			= (u32)(std::find(model.m_vertices.begin(),model.m_vertices.end(),_V)-model.m_vertices.begin());
		V[k].P			= _V->P;
		V[k].N			= _V->N; 
		V[k].Color		= model.color[id];
		V[k].T.set		(0,0,0);	//.
		V[k].B.set		(0,0,0);	//.
		V[k].UV.push_back(FF.tc[k]);
	}
}

void OGF_AddFace( OGF &ogf, const _face &FF, const xrMU_Model& model )
{
	OGF_Vertex		V[3];

	MModel_face2OGF_Vertices( FF, V, model );
	// build face
	TRY				( ogf._BuildFace( V[0], V[1], V[2] ) );
	V[0].UV.clear();	V[1].UV.clear();	V[2].UV.clear();
}

void calc_ogf( xrMU_Model &	mu_model )
{
	// Build OGFs
	for (xrMU_Model::v_subdivs_it it=mu_model.m_subdivs.begin(); it!=mu_model.m_subdivs.end(); it++)
	{
		OGF*		pOGF	= new OGF();
		b_material*	M		= &(pBuild->materials()[it->material]);	// and it's material
		R_ASSERT	(M);

		try {
			// Common data
			pOGF->Sector		= 0;
			pOGF->material		= it->material;

			// Collect textures
			OGF_Texture			T;
			TRY					(T.name		= pBuild->textures()[M->surfidx].name);
			TRY					(T.pSurface = &(pBuild->textures()[M->surfidx]));
			TRY					(pOGF->textures.push_back(T));

			// Collect faces & vertices
			try {
				xrMU_Model::v_faces_it	_beg	= mu_model.m_faces.begin() + it->start;
				xrMU_Model::v_faces_it	_end	= _beg + it->count;
				for (xrMU_Model::v_faces_it Fit =_beg; Fit!=_end; Fit++)
				{
					_face*	FF		= *Fit;
					R_ASSERT			(FF);
					OGF_AddFace( *pOGF, *FF, mu_model ); 
				}
			} catch (...) {  clMsg("* ERROR: MU2OGF, model %s, *faces*",*(mu_model.m_name)); }
		} catch (...)
		{
			clMsg("* ERROR: MU2OGF, 1st part, model %s",*(mu_model.m_name));
		}

		try {
			pOGF->Optimize			();
		} catch (...)	{ clMsg	("* ERROR: MU2OGF, [optimize], model %s",*(mu_model.m_name)); }
		try {
			pOGF->CalcBounds		();
		} catch (...)	{ clMsg	("* ERROR: MU2OGF, [bounds], model %s",*(mu_model.m_name)); }
		try {
			pOGF->CalculateTB		();
		} catch (...)	{ clMsg	("* ERROR: MU2OGF, [calc_tb], model %s",*(mu_model.m_name)); }
		try {
			pOGF->MakeProgressive	(c_PM_MetricLimit_mu);
		} catch (...)	{ clMsg	("* ERROR: MU2OGF, [progressive], model %s",*(mu_model.m_name)); }
		try {
			pOGF->Stripify			();
		} catch (...)	{ clMsg	("* ERROR: MU2OGF, [stripify], model %s",*(mu_model.m_name)); }

		it->ogf		=	pOGF;
	}
}
